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variation of gravity
相关语句
  重力变化
     ANOMALOUS VARIATION OF GRAVITY BEFORE AND AFTER THE GAO LIYING, BEIJING, 4.0 EARTHQUAKE
     北京高丽营4.0级地震前后的重力变化
短句来源
     VARIATION OF GRAVITY FIELD OF XINJIANG AREA AND JIASHI M_S6.8 EARTHQUAKE
     新疆地区重力变化与伽师6.8级地震
短句来源
     ANOMALOUS VARIATION OF GRAVITY BEFORE THE 1984 LINGWU EARTHQUAKE OF M_s=5.3
     宁夏灵武5.3级地震前后的重力变化
短句来源
     The geomagnetic anomaly exhibited a quadrantal distribution, and the law of annual variation of gravity is breaked, and regional field negative anomaly expresses gradient variation before the South Yellow Sea earthquake of M s 6.1.
     南黄海Ms6.1地震前地磁异常有呈象限分布的规律,并有发生于地磁正负变化梯度带附近的特征; 重力变化打破年变规律,出现大于区域场的负异常,且呈梯度变化
短句来源
     The Variation of gravity field in this area may be caused by the crustal deformation or deep transference and fault creep.
     重力变化可能是由该区地壳形变、地壳深部质量迁移和断层蠕动共同作用引起的。
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  “variation of gravity”译为未确定词的双语例句
     Variation of Gravity Field in Shanxi Region before and a fter Hongtong, Shanxi, Earthquake of M_L 5.0
     山西地区重力场变化与洪洞M_L5.0地震
短句来源
     This paper utilizes horizontal velocity data with a high resolution of 25 m and temperature data with a low resolution of 1 km measured during the MAP/WINE and MAC/SINE campaigns to study seasonal variation of gravity wave spectrum near the polar mesopause.
     使用MAP/WINE和MAC/SINE两次试验中测量的25m高分辨率水平速度数据和1km低分辨率温度数据,研究极区中层顶区域重力波谱的季节变化.
短句来源
     VARIATION OF GRAVITY FIELD IN NORTHERN CHINA IN 1997~2001 AND WEST TO KUNLUN MOUNTAIN PASS M_S8.1 EARTHQUAKE
     1997~2001年华北地区的重力场变化和昆仑山口西8.1级地震
短句来源
     The ignition over a thermally thin solid fuel heated by external radiation was investigated under different gravity environment. The effects of gravity, ambient oxygen concentration, ambient pressure, and the intensity of the external radiation on the ignition behavior were studied. Results showed that there are two types of ignition mechanisms in variation of gravity.
     研究外界辐射加热下,不同重力环境中热薄燃料的着火特性.探讨了重力、环境氧浓度、环境压力及外界辐射强度对着火的影响.结果表明,随着重力的变化,存在不同的着火机制.在微重力和在高的环境氧浓度中,材料的着火延迟时间变短.压力减小,着火延迟时间增大.随着辐射强度的增大,着火延迟时间变小.
短句来源
     Seasonal Variation of Gravity Wave Spectrum Near the Polar Mesopause
     极区中层顶区域重力波谱的季节变化
短句来源
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  相似匹配句对
     The variation of I.
     研究结果表明:I.
短句来源
     phasic variation;
     阶段性变化;
短句来源
     Fusion and Variation
     融合与变通
短句来源
     On the variation of education
     谈教育的异化
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     wood gravity.
     木材容重;
短句来源
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  variation of gravity
Diurnal Variation of Gravity Wave Activity at Midlatitudes in the Ionospheric F Region
      
The seasonal variation of gravity wave activity at altitudes around 95 km is investigated using digital measurements of low-frequency nighttime radiowave absorption at Pr?honice (50°N, 15°E) between 1989 and 1993.
      
Seasonal Variation of Gravity Wave Activity in the Lower Ionosphere in Central Europe
      
A note on secular variation of gravity due to non-tidal geodynamic phenomena
      
Expressions for the time variation of gravity and for deformations of equipotential surfaces due to the free nutation of the Earth have been derived.
      
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Before and after the Haicheng earthquake of magnitude 7.3 which occurred on Feb. 4, 1975, five repeated gravimeter surveys were carried out, three before and two after the earthquake, along a northwest-southeast profile of about 250 km in length not far on the west of the epicenter. The mean-square error of the measurements of the gravity differences between two consecutive points on the profile is less than 40μ Gal. From June, 1972 to May, 1973, within a period of about one year, the results of three...

Before and after the Haicheng earthquake of magnitude 7.3 which occurred on Feb. 4, 1975, five repeated gravimeter surveys were carried out, three before and two after the earthquake, along a northwest-southeast profile of about 250 km in length not far on the west of the epicenter. The mean-square error of the measurements of the gravity differences between two consecutive points on the profile is less than 40μ Gal. From June, 1972 to May, 1973, within a period of about one year, the results of three surveys indicated a clear decrease of gravity values at points on the southeastern portion of the profile, amounting to as much as 352μ Gal. After the earthquake, the fourth survey which was carried out on March, 1975, revealed that the gravity values had recovered to the levels at the first survey and continued to increase as was shown by a fifth survey carried out in July of the same year.Variations of gravity were also observed before and after the Tangshan earthquake of magnitude 7.8 which occurred on July 28, 1976, but in this case, gravity was increasing before the earthquake instead of decreasing. Along an east-west profile of about 270km in length and not far on the north of the epicenter, two gravity surveys were made before and two after the earthquake. The results showed that after the main shock, the gravity values of the whole profile, especially at those points closer to Tangshan, tended to return gradually to their values of the first survey before the earthquake.Prom these results, there seems to be a close relationship between these gravity variations and the occurrences of earthquakes. Based on results of repeated levelling work done in these regions, the estimated amount of gravity change caused by the change of elevation of the ground surface is far too small to account for the observed value. We therefore speculate that some big earthquakes might be associated with some sort of mass migration under the ground, within the crust or in the upper mantle. This migration would cause a large part of the gravity variation observed. We have made a theoretical analysis of this effect and attempted to get some estimate of the rate of this mass migration, even though we are not yet clear about the physics of it.

1975年2月4日海城7.3级地震前后在震中以西不远的一条长约250公里的北西-南东向剖面上进行了五次重力测量,震前三次,震后两次.剖面上相邻两个测点的重力差的测量均方误差小于40微伽.自1972年6月至1973年5月的一年期间的三次观测结果表明,剖面东南段重力值显著下降,最大达352微伽.地震以后,1975年3月的第四次重力测量发现,剖面东南段的重力值回升到第一次测量时的水平.1975年7月的第五次测量则表明剖面东南段的重力值继续上升.1976年7月28日唐山7.8级地震前后也观测到重力的变化,不过地震前重力是增加而不是减少.震前和震后,在震中以北不远的一条长约270公里的东西向剖面上各进行过两次重力测量.结果表明,主震后整个剖面,特别是靠近唐山的那些测点的重力也有逐渐恢复到震前第一次测量时的数值的趋势.由这些结果可以看到,重力的变化与地震的发生似有密切的关系.根据重复大地水准测量资料估计的地面高程变化所能引起的重力变化远比所观测到的变化为小.因此,我们推测某些大地震可能与地壳和上地幔内的质量迁移有关,认为所观测到的重力变化大部份是质量迁移引起的.我们对质量迁移的重力效应作了理论分析,但是,对迁移的物理过程...

1975年2月4日海城7.3级地震前后在震中以西不远的一条长约250公里的北西-南东向剖面上进行了五次重力测量,震前三次,震后两次.剖面上相邻两个测点的重力差的测量均方误差小于40微伽.自1972年6月至1973年5月的一年期间的三次观测结果表明,剖面东南段重力值显著下降,最大达352微伽.地震以后,1975年3月的第四次重力测量发现,剖面东南段的重力值回升到第一次测量时的水平.1975年7月的第五次测量则表明剖面东南段的重力值继续上升.1976年7月28日唐山7.8级地震前后也观测到重力的变化,不过地震前重力是增加而不是减少.震前和震后,在震中以北不远的一条长约270公里的东西向剖面上各进行过两次重力测量.结果表明,主震后整个剖面,特别是靠近唐山的那些测点的重力也有逐渐恢复到震前第一次测量时的数值的趋势.由这些结果可以看到,重力的变化与地震的发生似有密切的关系.根据重复大地水准测量资料估计的地面高程变化所能引起的重力变化远比所观测到的变化为小.因此,我们推测某些大地震可能与地壳和上地幔内的质量迁移有关,认为所观测到的重力变化大部份是质量迁移引起的.我们对质量迁移的重力效应作了理论分析,但是,对迁移的物理过程我们还很不清楚.

The practice and experiments for many years have proved that the calibration of the gravimeter varies with temperature and has great effect on observed values. So it is necessary to find the temperature coefficent of the calibration and to correct the calibration of the observation datao。In this article, the calibration of all gravity data in Bejing, Tianjin and Tangshan regions has is corrected in another way. After the correction, the annual variation of gravity values at various stations is obviously...

The practice and experiments for many years have proved that the calibration of the gravimeter varies with temperature and has great effect on observed values. So it is necessary to find the temperature coefficent of the calibration and to correct the calibration of the observation datao。In this article, the calibration of all gravity data in Bejing, Tianjin and Tangshan regions has is corrected in another way. After the correction, the annual variation of gravity values at various stations is obviously eliminated, and has been calculated pre-earthquake gravity anomaly inTangshan. From April, 1974 to March, 1976, the cumulative gravity increased by 1.30μgal and the short-term anomaly approached 200μgal。The obtained results show that. the pre-earthquake gravity variation may bt due to the density anomaly at deep levels of the earth's crust。

多年来的工作实践及实验证明了重力仪格值随温度变化而改变,而且对观测值的影响极大,以致造成虚假异常。本文对京津唐地区重力资料进行格值改算,再计算唐山地震前,唐山测点自74年4月至76年3月累积重力上升了130微伽,由76年3月到7月短期异常近200微伽。根据异常范围、形态、量值计算震前在莫氏界面断裂处有一个密度异常区。

Authors carried out free not adjustment calculation for the data of portable gravimetric measurement in North Henan. It was found that there appeared a regular variation of gravity field in North Henan from June, 1983 to Sep., 1984 and the greatest discrepant variation value amounted to 220 microgals. Trough further study, it was detected that the space distribution patterns of gravity point values and their variations were very alike. The correlation analysis pointed out that the correlation...

Authors carried out free not adjustment calculation for the data of portable gravimetric measurement in North Henan. It was found that there appeared a regular variation of gravity field in North Henan from June, 1983 to Sep., 1984 and the greatest discrepant variation value amounted to 220 microgals. Trough further study, it was detected that the space distribution patterns of gravity point values and their variations were very alike. The correlation analysis pointed out that the correlation coefficient between them reached highly 0.88. Hence,it was shown that there existed obvious systematic error of gravimeter calibration. Through regression treatment, the anomalous variations of gravity field in North Henan were basically eliminated, except for one or two measuring points. How to distinguish the systematic error of gravimeter calibration and eliminate its influence upon the results of gravity reiteration is a problem which has not been solved for a long time. The method given in this paper provides a more effective way to solve this problem.

作者对豫北地区流动重力观测资料进行了自由网平差计算。结果发现,1983年6月至1984年9月,豫北地区重力场呈现了一规律性变化,最大差异性变化达220微伽。进一步的研究发现,豫北地区重力点值变化的空间分布图象与重力点值的空间分布图象十分相象,两者间的相关系数高达0.88。这表明重力仪格值存在着明显的系统误差。经回归改正计算后,豫北地区重力场除了个别段点外,其异常变化基本消除。如何判明和消除重力仪格值系统误差对重力复测的影响是长期以来未能得到有效解决的问题。本文应用的方法为解决这一问题提供了一种行之有效的途径。

 
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